Is there a waiting list for the next batch of barrels? Please put Jester17 down for two - I'm good for 'em... Just let me know to pay for them. (Since I am new to Gunco.net I apparently can't make direct contact with Bluejack. Please contact me at siegeengine13@yahoo.com to work out the details.)

You should have thrown it out there in a new thread...not in bluejack's sale thread.

Are far as comparable to bluejack's.....I doubt it. So far all of the US made 5.45 barrels that I know of use the S&W 5.45 specs..which tend to have larger diameter bores (.220-.221) and about a slower twist rate. Bluejack had a custom rifling button made to give a .217 bore and @ a 6.5 twist rate just like the original Russian Krink barrels are from the factory. And his are chrome lined...not sure about R-guns...I doubt they are or it would state so on their website.

555th I have very little knowledge about this caliber how does the performance between the S&W and Russian specs differ?

BTW AOA told me they were changing the specs of their new 5.45 barrels from the S&W to Russian.

S&W specs in 5.45 is early USA made barrel, they are try guess around what russian will be , so S&W 5.45 AR are very close to .223/5.56 . that make the bullet very lose in the barrel. then Russian specs was base on my custom made rifling button , that is almost same as russian Krinov/AK74 barrels.

What's the deal with the 5.45x39 AKS74U (Russian and Bulgarian) barrels from Bluejack? Are there going to be any more available? If not, can anybody suggest a quality machinist who can re-profile a Bulgarian AK74 barrel to the Russian profile?

Hi Bluejack, does that mean the Krinkov is designed to stabilize a heavier bullet with it's faster twist than the AK74? Are the journal sizes the same between the two?

Yes, when they designed the Krinkov they found out use 1:6 will stabilize in short barrel . and journal size is not the same as AK-74 barrels. on russian krinkov trunnion area is bit bigger then AK-74, and on RSB of krinkov is different then AK-74. and much more ...

Thanks Bluejack. Interesting it's not for a heavier bullet but to stabilize the bullet in the shorter barrel. In a 16 inch barrel do they keep the 1:6 twist? So will your AK74 barrels be bulgarian or krink in journal size? And yes I'm learning that these rifles that seem to look the same have a lot of little differences that make for a maze of issues in building.